<div class="bd-content">
<h1 class="bd-title" id="content">导航</h1>
          <p class="bd-lead">有关如何使用Bootstrap包含的导航组件的文档和示例。</p>
          <h2 id="base-nav">基本导航</h2>

<p>Bootstrap中可用的导航从基础共享一般标记和样式 <code class="highlighter-rouge">.nav</code> 类到活动和禁用状态。 交换修饰符类以在每种样式之间切换。</p>

<p>基础的 <code class="highlighter-rouge">.nav</code> 组件使用flexbox构建，为构建所有类型的导航组件提供了坚实的基础。 它包括一些样式覆盖（用于处理列表），一些用于较大命中区域的链接填充和基本禁用样式。</p>

<div class="bd-callout bd-callout-info">
<p>基础的<code class="highlighter-rouge">.nav</code> 组件不包含任何  <code class="highlighter-rouge">.active</code> 状态。以下实例包括该类别，主要是为了说明这个 class 不会触发任何特殊的样式。</p>
</div>

<div class="bd-example">
<ul class="nav">
  <li class="nav-item">
    <a class="nav-link active" href="#">Active</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Disabled</a>
  </li>
</ul>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span></code></pre></figure>

<p>class 可以使用在很多地方，因此你的标记可以超级灵活。 使用与上面类似的 <code class="highlighter-rouge">&lt;ul&gt;</code>，或者用的 <code class="highlighter-rouge">&lt;nav&gt;</code> 元素自己滚动。 因为  <code class="highlighter-rouge">.nav</code> 使用  <code class="highlighter-rouge">display: flex</code>，导航链接与导航元件一样，不需要有额外的标记。</p>

<div class="bd-example">
<nav class="nav">
  <a class="nav-link active" href="#">Active</a>
  <a class="nav-link" href="#">Link</a>
  <a class="nav-link" href="#">Link</a>
  <a class="nav-link disabled" href="#">Disabled</a>
</nav>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;nav</span> <span class="na">class=</span><span class="s">"nav"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
<span class="nt">&lt;/nav&gt;</span></code></pre></figure>

<h2 id="available-styles">可用样式</h2>

<p>使用工具更改<code class="highlighter-rouge">.nav</code> 元件的样式。 依据需要混合搭配或自行建立。</p>

<h3 id="horizontal-alignment">水平对齐</h3>

<p>使用 布局 -> 栅格系统 -> flexbox 工具 更改导航的水平对齐方式。默认情况下导航左对齐，但你可以轻鬆地将其更改为中心或右对齐。</p>

<p>用 <code class="highlighter-rouge">.justify-content-center</code> 置中：</p>

<div class="bd-example">
<ul class="nav justify-content-center">
  <li class="nav-item">
    <a class="nav-link active" href="#">Active</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Disabled</a>
  </li>
</ul>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav justify-content-center"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span></code></pre></figure>

<p>使用 <code class="highlighter-rouge">.justify-content-end</code> 靠右对齐：</p>

<div class="bd-example">
<ul class="nav justify-content-end">
  <li class="nav-item">
    <a class="nav-link active" href="#">Active</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Disabled</a>
  </li>
</ul>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav justify-content-end"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span></code></pre></figure>

<h3 id="vertical">垂直</h3>

<p>通过使用 <code class="highlighter-rouge">.flex-column</code> 工具更改 flex 项目的轴项。如果在特定 viewports 需要堆叠，可使用响应式版本（例如 <code class="highlighter-rouge">.flex-sm-column</code>)。</p>

<div class="bd-example">
<ul class="nav flex-column">
  <li class="nav-item">
    <a class="nav-link active" href="#">Active</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Disabled</a>
  </li>
</ul>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav flex-column"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span></code></pre></figure>

<p>和往常一样，垂直导航也是可以没有 <code class="highlighter-rouge">&lt;ul&gt;</code>。</p>

<div class="bd-example">
<nav class="nav flex-column">
  <a class="nav-link active" href="#">Active</a>
  <a class="nav-link" href="#">Link</a>
  <a class="nav-link" href="#">Link</a>
  <a class="nav-link disabled" href="#">Disabled</a>
</nav>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;nav</span> <span class="na">class=</span><span class="s">"nav flex-column"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
<span class="nt">&lt;/nav&gt;</span></code></pre></figure>

<h3 id="tabs">分页标签</h3>

<p>从上面获取基本导航并添加 <code class="highlighter-rouge">.nav-tabs</code> 用于生成分页标签界面的类。 使用它们来创建可用于我们的区域 <a href="#javascript-behavior">分页 JavaScript 插件。</a></p>

<div class="bd-example">
<ul class="nav nav-tabs">
  <li class="nav-item">
    <a class="nav-link active" href="#">Active</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Disabled</a>
  </li>
</ul>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav nav-tabs"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span></code></pre></figure>

<h3 id="pills">片狀</h3>

<p>使用相同的 HTML，但使用  <code class="highlighter-rouge">.nav-pills</code> 取代：</p>

<div class="bd-example">
<ul class="nav nav-pills">
  <li class="nav-item">
    <a class="nav-link active" href="#">Active</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Disabled</a>
  </li>
</ul>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav nav-pills"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span></code></pre></figure>

<h3 id="fill-and-justify">填充和对齐</h3>

<p><code class="highlighter-rouge">.nav</code>内容有两种宽度扩展用的 Class，使用  <code class="highlighter-rouge">.nav-fill</code> 会将 <code class="highlighter-rouge">.nav-item</code> 容按照比例分配空间。注意，这会佔用所有的水平空间，但并不是每个导航项目都具有相同宽度。</p>

<div class="bd-example">
<ul class="nav nav-pills nav-fill">
  <li class="nav-item">
    <a class="nav-link active" href="#">Active</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Longer nav link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Disabled</a>
  </li>
</ul>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav nav-pills nav-fill"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Longer nav link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span></code></pre></figure>

<p>当使用 <code class="highlighter-rouge">&lt;nav&gt;</code> 的导航时，请确保在链接上包含  <code class="highlighter-rouge">.nav-item</code> on the anchors.</p>

<div class="bd-example">
<nav class="nav nav-pills nav-fill">
  <a class="nav-item nav-link active" href="#">Active</a>
  <a class="nav-item nav-link" href="#">Link</a>
  <a class="nav-item nav-link" href="#">Link</a>
  <a class="nav-item nav-link disabled" href="#">Disabled</a>
</nav>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;nav</span> <span class="na">class=</span><span class="s">"nav nav-pills nav-fill"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
<span class="nt">&lt;/nav&gt;</span></code></pre></figure>

<p>对于等宽元素使用 <code class="highlighter-rouge">.nav-justified</code>。 所有的水平空间将被导航链接佔据，但与上面的 <code class="highlighter-rouge">.nav-fill</code>  不同，每个导航项都将是相同的宽度。</p>

<div class="bd-example">
<nav class="nav nav-pills nav-justified">
  <a class="nav-link active" href="#">Active</a>
  <a class="nav-link" href="#">Longer nav link</a>
  <a class="nav-link" href="#">Link</a>
  <a class="nav-link disabled" href="#">Disabled</a>
</nav>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;nav</span> <span class="na">class=</span><span class="s">"nav nav-pills nav-justified"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Longer nav link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
<span class="nt">&lt;/nav&gt;</span></code></pre></figure>

<p>与 <code class="highlighter-rouge">.nav-fill</code> 的例子类似，使用基于 <code class="highlighter-rouge">&lt;nav&gt;</code> 的导航，请确保在链接上包含 <code class="highlighter-rouge">.nav-item</code> 。</p>

<div class="bd-example">
<nav class="nav nav-pills nav-justified">
  <a class="nav-item nav-link active" href="#">Active</a>
  <a class="nav-item nav-link" href="#">Link</a>
  <a class="nav-item nav-link" href="#">Link</a>
  <a class="nav-item nav-link disabled" href="#">Disabled</a>
</nav>

</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;nav</span> <span class="na">class=</span><span class="s">"nav nav-pills nav-justified"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
<span class="nt">&lt;/nav&gt;</span></code></pre></figure>

<h2 id="working-with-flex-utilities">使用 flex 工具</h2>

<p>如果需要响应式的导航变化，请使用一系列 flexbox 工具 这些工具在中断点之间提供更多的设定。 在下面的实例中，我们的导航将堆叠在最小的中断点上，从小中断点开始填充完整宽度的水平佈局。</p>

<div class="bd-example">
<nav class="nav nav-pills flex-column flex-sm-row">
  <a class="flex-sm-fill text-sm-center nav-link active" href="#">Active</a>
  <a class="flex-sm-fill text-sm-center nav-link" href="#">Link</a>
  <a class="flex-sm-fill text-sm-center nav-link" href="#">Link</a>
  <a class="flex-sm-fill text-sm-center nav-link disabled" href="#">Disabled</a>
</nav>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;nav</span> <span class="na">class=</span><span class="s">"nav nav-pills flex-column flex-sm-row"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"flex-sm-fill text-sm-center nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"flex-sm-fill text-sm-center nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"flex-sm-fill text-sm-center nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"flex-sm-fill text-sm-center nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
<span class="nt">&lt;/nav&gt;</span></code></pre></figure>

<h2 id="regarding-accessibility">关于可访问性</h2>

<p>如果你使用导航栏来提供导航栏，请务必添加导航栏<code class="highlighter-rouge">role="navigation"</code> 到最合乎逻辑的父容器 <code class="highlighter-rouge">&lt;ul&gt;</code>,或包装 <code class="highlighter-rouge">&lt;nav&gt;</code> 围绕整个导航的元素。 不要将角色添加到 <code class="highlighter-rouge">&lt;ul&gt;</code>本身，因为这将阻止它被辅助技术宣布为实际列表。</p>

<p>请注意导航栏，即使在视觉上将其设置为标签<code class="highlighter-rouge">.nav-tabs</code>  的分页标签，应该  <strong>不会</strong> 被赋予 <code class="highlighter-rouge">role="tablist"</code>, <code class="highlighter-rouge">role="tab"</code> 或 <code class="highlighter-rouge">role="tabpanel"</code> 属性。 这些仅适用于动态分页标签介面，如 <a href="https://www.w3.org/TR/wai-aria-practices/#tabpanel"><abbr title="Web Accessibility Initiative">WAI</abbr> <abbr title="Accessible Rich Internet Applications">ARIA</abbr> Authoring Practices</a>中描述。 有关实例，请参阅本节中的 <a href="#javascript-behavior">JavaScript behavior</a>。</p>

<h2 id="using-dropdowns">使用下拉选单</h2>

<p>加入额外的 HTML 和下拉选单组件。</p>

<h3 id="tabs-with-dropdowns">带下拉选单的分页标签</h3>

<div class="bd-example">
<ul class="nav nav-tabs">
  <li class="nav-item">
    <a class="nav-link active" href="#">Active</a>
  </li>
  <li class="nav-item dropdown">
    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
    <div class="dropdown-menu">
      <a class="dropdown-item" href="#">Action</a>
      <a class="dropdown-item" href="#">Another action</a>
      <a class="dropdown-item" href="#">Something else here</a>
      <div class="dropdown-divider"></div>
      <a class="dropdown-item" href="#">Separated link</a>
    </div>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Disabled</a>
  </li>
</ul>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav nav-tabs"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item dropdown"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link dropdown-toggle"</span> <span class="na">data-toggle=</span><span class="s">"dropdown"</span> <span class="na">href=</span><span class="s">"#"</span> <span class="na">role=</span><span class="s">"button"</span> <span class="na">aria-haspopup=</span><span class="s">"true"</span> <span class="na">aria-expanded=</span><span class="s">"false"</span><span class="nt">&gt;</span>Dropdown<span class="nt">&lt;/a&gt;</span>
    <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"dropdown-menu"</span><span class="nt">&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"dropdown-item"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Action<span class="nt">&lt;/a&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"dropdown-item"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Another action<span class="nt">&lt;/a&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"dropdown-item"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Something else here<span class="nt">&lt;/a&gt;</span>
      <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"dropdown-divider"</span><span class="nt">&gt;&lt;/div&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"dropdown-item"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Separated link<span class="nt">&lt;/a&gt;</span>
    <span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span></code></pre></figure>

<h3 id="pills-with-dropdowns">片状的下拉选单</h3>

<div class="bd-example">
<ul class="nav nav-pills">
  <li class="nav-item">
    <a class="nav-link active" href="#">Active</a>
  </li>
  <li class="nav-item dropdown">
    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
    <div class="dropdown-menu">
      <a class="dropdown-item" href="#">Action</a>
      <a class="dropdown-item" href="#">Another action</a>
      <a class="dropdown-item" href="#">Something else here</a>
      <div class="dropdown-divider"></div>
      <a class="dropdown-item" href="#">Separated link</a>
    </div>
  </li>
  <li class="nav-item">
    <a class="nav-link" href="#">Link</a>
  </li>
  <li class="nav-item">
    <a class="nav-link disabled" href="#">Disabled</a>
  </li>
</ul>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav nav-pills"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Active<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item dropdown"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link dropdown-toggle"</span> <span class="na">data-toggle=</span><span class="s">"dropdown"</span> <span class="na">href=</span><span class="s">"#"</span> <span class="na">role=</span><span class="s">"button"</span> <span class="na">aria-haspopup=</span><span class="s">"true"</span> <span class="na">aria-expanded=</span><span class="s">"false"</span><span class="nt">&gt;</span>Dropdown<span class="nt">&lt;/a&gt;</span>
    <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"dropdown-menu"</span><span class="nt">&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"dropdown-item"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Action<span class="nt">&lt;/a&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"dropdown-item"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Another action<span class="nt">&lt;/a&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"dropdown-item"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Something else here<span class="nt">&lt;/a&gt;</span>
      <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"dropdown-divider"</span><span class="nt">&gt;&lt;/div&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"dropdown-item"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Separated link<span class="nt">&lt;/a&gt;</span>
    <span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Link<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link disabled"</span> <span class="na">href=</span><span class="s">"#"</span><span class="nt">&gt;</span>Disabled<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span></code></pre></figure>

<h2 id="javascript-behavior">JavaScript 行为</h2>

<p>使用 JavaScript 分页标签插件 - 单独或通过编译的 <code class="highlighter-rouge">bootstrap.js</code> 档 - 扩展我们的导航分页标签和片状的，以创建可选的分页标签、甚至是下拉选单。</p>

<p>如果你要自行编译 JS，记得包 <code class="highlighter-rouge">util.js</code>。</p>

<p>动态tab页介面，如<a href="https://www.w3.org/TR/wai-aria-practices/#tabpanel"><abbr title="Web Accessibility Initiative">WAI</abbr> <abbr title="Accessible Rich Internet Applications">ARIA</abbr> Authoring Practices</a>，需要 <code class="highlighter-rouge">role="tablist"</code>、<code class="highlighter-rouge">role="tab"</code>，<code class="highlighter-rouge">role="tabpanel"</code> 和附加的 <code class="highlighter-rouge">aria-</code> 属性，向用户提供辅助技术（如屏幕阅读器）的结构、功能和当前状态。 </p>

<p>请注意，动态tab页应该 <em>不</em> 包含下拉选单，因为这会导致可用性和可见性问题。从可用性的角度来看，当前显示的选项卡的触发器元素不会立即显示（因为它在关闭的下拉选单中）可能会导致混淆。 从可见性的角度来看，目前还没有明确的方式将这种结构对应到标准的 WAI ARIA 模式，这意味著不能容易地被用户的辅助技术所理解。</p>
<div class="bd-example bd-example-tabs">
  <ul class="nav nav-tabs" id="myTab" role="tablist">
    <li class="nav-item">
      <a class="nav-link active" id="home-tab" data-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" id="contact-tab" data-toggle="tab" href="#contact" role="tab" aria-controls="contact" aria-selected="false">Contact</a>
    </li>
  </ul>
  <div class="tab-content" id="myTabContent">
    <div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">
      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
    </div>
    <div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab">
      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
    </div>
    <div class="tab-pane fade" id="contact" role="tabpanel" aria-labelledby="contact-tab">
      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
    </div>
  </div>
</div>

<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav nav-tabs"</span> <span class="na">id=</span><span class="s">"myTab"</span> <span class="na">role=</span><span class="s">"tablist"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">id=</span><span class="s">"home-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#home"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"home"</span> <span class="na">aria-selected=</span><span class="s">"true"</span><span class="nt">&gt;</span>Home<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"profile-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#profile"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"profile"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Profile<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"contact-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#contact"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"contact"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Contact<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span>
<span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-content"</span> <span class="na">id=</span><span class="s">"myTabContent"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade show active"</span> <span class="na">id=</span><span class="s">"home"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"home-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"profile"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"profile-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"contact"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"contact-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
<span class="nt">&lt;/div&gt;</span></code></pre></figure>

<p>如上所示，这不仅可以使用于 <code class="highlighter-rouge">&lt;ul&gt;</code> 的标记。也可以用于 <code class="highlighter-rouge">&lt;nav&gt;</code> 的标记如下所示。或者随随著你自己需求的标示，如果你使用 <code class="highlighter-rouge">&lt;nav&gt;</code> 则不需要加入 <code class="highlighter-rouge">role="tablist"</code>，因为这会覆盖该元素作为一个导航地标。相反，使用一个替代元素(以下实例是使用 <code class="highlighter-rouge">&lt;div&gt;</code>)可用 <code class="highlighter-rouge">&lt;nav&gt;</code> 包裹它。</p>

<div class="bd-example bd-example-tabs">
  <nav>
    <div class="nav nav-tabs" id="nav-tab" role="tablist">
      <a class="nav-item nav-link active" id="nav-home-tab" data-toggle="tab" href="#nav-home" role="tab" aria-controls="nav-home" aria-selected="true">Home</a>
      <a class="nav-item nav-link" id="nav-profile-tab" data-toggle="tab" href="#nav-profile" role="tab" aria-controls="nav-profile" aria-selected="false">Profile</a>
      <a class="nav-item nav-link" id="nav-contact-tab" data-toggle="tab" href="#nav-contact" role="tab" aria-controls="nav-contact" aria-selected="false">Contact</a>
    </div>
  </nav>
  <div class="tab-content" id="nav-tabContent">
    <div class="tab-pane fade show active" id="nav-home" role="tabpanel" aria-labelledby="nav-home-tab">
      <p>Et et consectetur ipsum labore excepteur est proident excepteur ad velit occaecat qui minim occaecat veniam. Fugiat veniam incididunt anim aliqua enim pariatur veniam sunt est aute sit dolor anim. Velit non irure adipisicing aliqua ullamco irure incididunt irure non esse consectetur nostrud minim non minim occaecat. Amet duis do nisi duis veniam non est eiusmod tempor incididunt tempor dolor ipsum in qui sit. Exercitation mollit sit culpa nisi culpa non adipisicing reprehenderit do dolore. Duis reprehenderit occaecat anim ullamco ad duis occaecat ex.</p>
    </div>
    <div class="tab-pane fade" id="nav-profile" role="tabpanel" aria-labelledby="nav-profile-tab">
      <p>Nulla est ullamco ut irure incididunt nulla Lorem Lorem minim irure officia enim reprehenderit. Magna duis labore cillum sint adipisicing exercitation ipsum. Nostrud ut anim non exercitation velit laboris fugiat cupidatat. Commodo esse dolore fugiat sint velit ullamco magna consequat voluptate minim amet aliquip ipsum aute laboris nisi. Labore labore veniam irure irure ipsum pariatur mollit magna in cupidatat dolore magna irure esse tempor ad mollit. Dolore commodo nulla minim amet ipsum officia consectetur amet ullamco voluptate nisi commodo ea sit eu.</p>
    </div>
    <div class="tab-pane fade" id="nav-contact" role="tabpanel" aria-labelledby="nav-contact-tab">
      <p>Sint sit mollit irure quis est nostrud cillum consequat Lorem esse do quis dolor esse fugiat sunt do. Eu ex commodo veniam Lorem aliquip laborum occaecat qui Lorem esse mollit dolore anim cupidatat. Deserunt officia id Lorem nostrud aute id commodo elit eiusmod enim irure amet eiusmod qui reprehenderit nostrud tempor. Fugiat ipsum excepteur in aliqua non et quis aliquip ad irure in labore cillum elit enim. Consequat aliquip incididunt ipsum et minim laborum laborum laborum et cillum labore. Deserunt adipisicing cillum id nulla minim nostrud labore eiusmod et amet. Laboris consequat consequat commodo non ut non aliquip reprehenderit nulla anim occaecat. Sunt sit ullamco reprehenderit irure ea ullamco Lorem aute nostrud magna.</p>
    </div>
  </div>
</div>

<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;nav&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"nav nav-tabs"</span> <span class="na">id=</span><span class="s">"nav-tab"</span> <span class="na">role=</span><span class="s">"tablist"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link active"</span> <span class="na">id=</span><span class="s">"nav-home-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#nav-home"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"nav-home"</span> <span class="na">aria-selected=</span><span class="s">"true"</span><span class="nt">&gt;</span>Home<span class="nt">&lt;/a&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link"</span> <span class="na">id=</span><span class="s">"nav-profile-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#nav-profile"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"nav-profile"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Profile<span class="nt">&lt;/a&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-item nav-link"</span> <span class="na">id=</span><span class="s">"nav-contact-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#nav-contact"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"nav-contact"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Contact<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/div&gt;</span>
<span class="nt">&lt;/nav&gt;</span>
<span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-content"</span> <span class="na">id=</span><span class="s">"nav-tabContent"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade show active"</span> <span class="na">id=</span><span class="s">"nav-home"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"nav-home-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"nav-profile"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"nav-profile-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"nav-contact"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"nav-contact-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
<span class="nt">&lt;/div&gt;</span></code></pre></figure>

<p>标签分页插件也能使用于片状。</p>

<div class="bd-example bd-example-tabs">
  <ul class="nav nav-pills mb-3" id="pills-tab" role="tablist">
    <li class="nav-item">
      <a class="nav-link active" id="pills-home-tab" data-toggle="pill" href="#pills-home" role="tab" aria-controls="pills-home" aria-selected="true">Home</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" id="pills-profile-tab" data-toggle="pill" href="#pills-profile" role="tab" aria-controls="pills-profile" aria-selected="false">Profile</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" id="pills-contact-tab" data-toggle="pill" href="#pills-contact" role="tab" aria-controls="pills-contact" aria-selected="false">Contact</a>
    </li>
  </ul>
  <div class="tab-content" id="pills-tabContent">
    <div class="tab-pane fade show active" id="pills-home" role="tabpanel" aria-labelledby="pills-home-tab">
      <p>Consequat occaecat ullamco amet non eiusmod nostrud dolore irure incididunt est duis anim sunt officia. Fugiat velit proident aliquip nisi incididunt nostrud exercitation proident est nisi. Irure magna elit commodo anim ex veniam culpa eiusmod id nostrud sit cupidatat in veniam ad. Eiusmod consequat eu adipisicing minim anim aliquip cupidatat culpa excepteur quis. Occaecat sit eu exercitation irure Lorem incididunt nostrud.</p>
    </div>
    <div class="tab-pane fade" id="pills-profile" role="tabpanel" aria-labelledby="pills-profile-tab">
      <p>Ad pariatur nostrud pariatur exercitation ipsum ipsum culpa mollit commodo mollit ex. Aute sunt incididunt amet commodo est sint nisi deserunt pariatur do. Aliquip ex eiusmod voluptate exercitation cillum id incididunt elit sunt. Qui minim sit magna Lorem id et dolore velit Lorem amet exercitation duis deserunt. Anim id labore elit adipisicing ut in id occaecat pariatur ut ullamco ea tempor duis.</p>
    </div>
    <div class="tab-pane fade" id="pills-contact" role="tabpanel" aria-labelledby="pills-contact-tab">
      <p>Est quis nulla laborum officia ad nisi ex nostrud culpa Lorem excepteur aliquip dolor aliqua irure ex. Nulla ut duis ipsum nisi elit fugiat commodo sunt reprehenderit laborum veniam eu veniam. Eiusmod minim exercitation fugiat irure ex labore incididunt do fugiat commodo aliquip sit id deserunt reprehenderit aliquip nostrud. Amet ex cupidatat excepteur aute veniam incididunt mollit cupidatat esse irure officia elit do ipsum ullamco Lorem. Ullamco ut ad minim do mollit labore ipsum laboris ipsum commodo sunt tempor enim incididunt. Commodo quis sunt dolore aliquip aute tempor irure magna enim minim reprehenderit. Ullamco consectetur culpa veniam sint cillum aliqua incididunt velit ullamco sunt ullamco quis quis commodo voluptate. Mollit nulla nostrud adipisicing aliqua cupidatat aliqua pariatur mollit voluptate voluptate consequat non.</p>
    </div>
  </div>
</div>

<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav nav-pills mb-3"</span> <span class="na">id=</span><span class="s">"pills-tab"</span> <span class="na">role=</span><span class="s">"tablist"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">id=</span><span class="s">"pills-home-tab"</span> <span class="na">data-toggle=</span><span class="s">"pill"</span> <span class="na">href=</span><span class="s">"#pills-home"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"pills-home"</span> <span class="na">aria-selected=</span><span class="s">"true"</span><span class="nt">&gt;</span>Home<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"pills-profile-tab"</span> <span class="na">data-toggle=</span><span class="s">"pill"</span> <span class="na">href=</span><span class="s">"#pills-profile"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"pills-profile"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Profile<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"pills-contact-tab"</span> <span class="na">data-toggle=</span><span class="s">"pill"</span> <span class="na">href=</span><span class="s">"#pills-contact"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"pills-contact"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Contact<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span>
<span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-content"</span> <span class="na">id=</span><span class="s">"pills-tabContent"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade show active"</span> <span class="na">id=</span><span class="s">"pills-home"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"pills-home-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"pills-profile"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"pills-profile-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"pills-contact"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"pills-contact-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
<span class="nt">&lt;/div&gt;</span></code></pre></figure>

<p>还有搭配垂直片状。</p>

<div class="bd-example bd-example-tabs">
  <div class="row">
    <div class="col-3">
      <div class="nav flex-column nav-pills" id="v-pills-tab" role="tablist" aria-orientation="vertical">
        <a class="nav-link active" id="v-pills-home-tab" data-toggle="pill" href="#v-pills-home" role="tab" aria-controls="v-pills-home" aria-selected="true">Home</a>
        <a class="nav-link" id="v-pills-profile-tab" data-toggle="pill" href="#v-pills-profile" role="tab" aria-controls="v-pills-profile" aria-selected="false">Profile</a>
        <a class="nav-link" id="v-pills-messages-tab" data-toggle="pill" href="#v-pills-messages" role="tab" aria-controls="v-pills-messages" aria-selected="false">Messages</a>
        <a class="nav-link" id="v-pills-settings-tab" data-toggle="pill" href="#v-pills-settings" role="tab" aria-controls="v-pills-settings" aria-selected="false">Settings</a>
      </div>
    </div>
    <div class="col-9">
      <div class="tab-content" id="v-pills-tabContent">
        <div class="tab-pane fade show active" id="v-pills-home" role="tabpanel" aria-labelledby="v-pills-home-tab">
          <p>Cillum ad ut irure tempor velit nostrud occaecat ullamco aliqua anim Lorem sint. Veniam sint duis incididunt do esse magna mollit excepteur laborum qui. Id id reprehenderit sit est eu aliqua occaecat quis et velit excepteur laborum mollit dolore eiusmod. Ipsum dolor in occaecat commodo et voluptate minim reprehenderit mollit pariatur. Deserunt non laborum enim et cillum eu deserunt excepteur ea incididunt minim occaecat.</p>
        </div>
        <div class="tab-pane fade" id="v-pills-profile" role="tabpanel" aria-labelledby="v-pills-profile-tab">
          <p>Culpa dolor voluptate do laboris laboris irure reprehenderit id incididunt duis pariatur mollit aute magna pariatur consectetur. Eu veniam duis non ut dolor deserunt commodo et minim in quis laboris ipsum velit id veniam. Quis ut consectetur adipisicing officia excepteur non sit. Ut et elit aliquip labore Lorem enim eu. Ullamco mollit occaecat dolore ipsum id officia mollit qui esse anim eiusmod do sint minim consectetur qui.</p>
        </div>
        <div class="tab-pane fade" id="v-pills-messages" role="tabpanel" aria-labelledby="v-pills-messages-tab">
          <p>Fugiat id quis dolor culpa eiusmod anim velit excepteur proident dolor aute qui magna. Ad proident laboris ullamco esse anim Lorem Lorem veniam quis Lorem irure occaecat velit nostrud magna nulla. Velit et et proident Lorem do ea tempor officia dolor. Reprehenderit Lorem aliquip labore est magna commodo est ea veniam consectetur.</p>
        </div>
        <div class="tab-pane fade" id="v-pills-settings" role="tabpanel" aria-labelledby="v-pills-settings-tab">
          <p>Eu dolore ea ullamco dolore Lorem id cupidatat excepteur reprehenderit consectetur elit id dolor proident in cupidatat officia. Voluptate excepteur commodo labore nisi cillum duis aliqua do. Aliqua amet qui mollit consectetur nulla mollit velit aliqua veniam nisi id do Lorem deserunt amet. Culpa ullamco sit adipisicing labore officia magna elit nisi in aute tempor commodo eiusmod.</p>
        </div>
      </div>
    </div>
  </div>
</div>

<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"row"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"col-3"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"nav flex-column nav-pills"</span> <span class="na">id=</span><span class="s">"v-pills-tab"</span> <span class="na">role=</span><span class="s">"tablist"</span> <span class="na">aria-orientation=</span><span class="s">"vertical"</span><span class="nt">&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">id=</span><span class="s">"v-pills-home-tab"</span> <span class="na">data-toggle=</span><span class="s">"pill"</span> <span class="na">href=</span><span class="s">"#v-pills-home"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"v-pills-home"</span> <span class="na">aria-selected=</span><span class="s">"true"</span><span class="nt">&gt;</span>Home<span class="nt">&lt;/a&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"v-pills-profile-tab"</span> <span class="na">data-toggle=</span><span class="s">"pill"</span> <span class="na">href=</span><span class="s">"#v-pills-profile"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"v-pills-profile"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Profile<span class="nt">&lt;/a&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"v-pills-messages-tab"</span> <span class="na">data-toggle=</span><span class="s">"pill"</span> <span class="na">href=</span><span class="s">"#v-pills-messages"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"v-pills-messages"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Messages<span class="nt">&lt;/a&gt;</span>
      <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"v-pills-settings-tab"</span> <span class="na">data-toggle=</span><span class="s">"pill"</span> <span class="na">href=</span><span class="s">"#v-pills-settings"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"v-pills-settings"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Settings<span class="nt">&lt;/a&gt;</span>
    <span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"col-9"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-content"</span> <span class="na">id=</span><span class="s">"v-pills-tabContent"</span><span class="nt">&gt;</span>
      <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade show active"</span> <span class="na">id=</span><span class="s">"v-pills-home"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"v-pills-home-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
      <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"v-pills-profile"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"v-pills-profile-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
      <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"v-pills-messages"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"v-pills-messages-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
      <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"v-pills-settings"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"v-pills-settings-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
    <span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;/div&gt;</span>
<span class="nt">&lt;/div&gt;</span></code></pre></figure>

<h3 id="using-data-attributes">使用data属性</h3>

<p>只需在元素上指定 <code class="highlighter-rouge">data-toggle="tab"</code> 或 <code class="highlighter-rouge">data-toggle="pill"</code> 即可启动标签或片状导航，而无需编写任何 JavaScript。可在  <code class="highlighter-rouge">.nav-tabs</code> 或 <code class="highlighter-rouge">.nav-pills</code> 上使用这些data属性</p>

<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="c">&lt;!-- Nav tabs --&gt;</span>
<span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav nav-tabs"</span> <span class="na">id=</span><span class="s">"myTab"</span> <span class="na">role=</span><span class="s">"tablist"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">id=</span><span class="s">"home-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#home"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"home"</span> <span class="na">aria-selected=</span><span class="s">"true"</span><span class="nt">&gt;</span>Home<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"profile-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#profile"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"profile"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Profile<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"messages-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#messages"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"messages"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Messages<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"settings-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#settings"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"settings"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Settings<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span>

<span class="c">&lt;!-- Tab panes --&gt;</span>
<span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-content"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane active"</span> <span class="na">id=</span><span class="s">"home"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"home-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane"</span> <span class="na">id=</span><span class="s">"profile"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"profile-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane"</span> <span class="na">id=</span><span class="s">"messages"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"messages-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane"</span> <span class="na">id=</span><span class="s">"settings"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"settings-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
<span class="nt">&lt;/div&gt;</span></code></pre></figure>

<h3 id="via-javascript">通过 JavaScrip</h3>

<p>通过 JavaScript 启用分页标签(每一个分页标签需要分别启动)：</p>

<figure class="highlight"><pre><code class="language-js" data-lang="js"><span class="nx">$</span><span class="p">(</span><span class="s1">'#myTab a'</span><span class="p">).</span><span class="nx">on</span><span class="p">(</span><span class="s1">'click'</span><span class="p">,</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">e</span><span class="p">)</span> <span class="p">{</span>
  <span class="nx">e</span><span class="p">.</span><span class="nx">preventDefault</span><span class="p">()</span>
  <span class="nx">$</span><span class="p">(</span><span class="k">this</span><span class="p">).</span><span class="nx">tab</span><span class="p">(</span><span class="s1">'show'</span><span class="p">)</span>
<span class="p">})</span></code></pre></figure>

<p>启用分页标签有以下数种方法：：</p>

<figure class="highlight"><pre><code class="language-js" data-lang="js"><span class="nx">$</span><span class="p">(</span><span class="s1">'#myTab a[href="#profile"]'</span><span class="p">).</span><span class="nx">tab</span><span class="p">(</span><span class="s1">'show'</span><span class="p">)</span> <span class="c1">// Select tab by name</span>
<span class="nx">$</span><span class="p">(</span><span class="s1">'#myTab li:first-child a'</span><span class="p">).</span><span class="nx">tab</span><span class="p">(</span><span class="s1">'show'</span><span class="p">)</span> <span class="c1">// Select first tab</span>
<span class="nx">$</span><span class="p">(</span><span class="s1">'#myTab li:last-child a'</span><span class="p">).</span><span class="nx">tab</span><span class="p">(</span><span class="s1">'show'</span><span class="p">)</span> <span class="c1">// Select last tab</span>
<span class="nx">$</span><span class="p">(</span><span class="s1">'#myTab li:nth-child(3) a'</span><span class="p">).</span><span class="nx">tab</span><span class="p">(</span><span class="s1">'show'</span><span class="p">)</span> <span class="c1">// Select third tab</span></code></pre></figure>

<h3 id="fade-effect">淡入淡出</h3>

<p>要使分页标签淡入淡出，请将 <code class="highlighter-rouge">.fade</code> 加到每个 <code class="highlighter-rouge">.tab-pane</code>中。 第一个分页内容还必须具有 <code class="highlighter-rouge">.show</code>  以使初始内容可见。</p>

<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-content"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade show active"</span> <span class="na">id=</span><span class="s">"home"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"home-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"profile"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"profile-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"messages"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"messages-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane fade"</span> <span class="na">id=</span><span class="s">"settings"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"settings-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
<span class="nt">&lt;/div&gt;</span></code></pre></figure>

<h3 id="methods">方法</h3>

<div class="bd-callout bd-callout-danger">
<h4 id="asynchronous-methods-and-transitions">异步方法和转换</h4>

<p>所有API方法都是<strong>异步</strong> 然后开始 <strong>过渡</strong>。一旦转换开始，它们就会返回调用者但是<strong>在它结束之前</strong>。另外，一个方法调用了 <strong>转换组件将被忽略</strong>.</p>

</div>

<h4 id="tab">$().tab</h4>

<p>启动分页标签元素和内容容器。 标签应该有一个<code class="highlighter-rouge">data-target</code> 或 <code class="highlighter-rouge">href</code> 定位在 DOM 中的一个容器节点。</p>

<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt">&lt;ul</span> <span class="na">class=</span><span class="s">"nav nav-tabs"</span> <span class="na">id=</span><span class="s">"myTab"</span> <span class="na">role=</span><span class="s">"tablist"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link active"</span> <span class="na">id=</span><span class="s">"home-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#home"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"home"</span> <span class="na">aria-selected=</span><span class="s">"true"</span><span class="nt">&gt;</span>Home<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"profile-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#profile"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"profile"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Profile<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"messages-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#messages"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"messages"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Messages<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
  <span class="nt">&lt;li</span> <span class="na">class=</span><span class="s">"nav-item"</span><span class="nt">&gt;</span>
    <span class="nt">&lt;a</span> <span class="na">class=</span><span class="s">"nav-link"</span> <span class="na">id=</span><span class="s">"settings-tab"</span> <span class="na">data-toggle=</span><span class="s">"tab"</span> <span class="na">href=</span><span class="s">"#settings"</span> <span class="na">role=</span><span class="s">"tab"</span> <span class="na">aria-controls=</span><span class="s">"settings"</span> <span class="na">aria-selected=</span><span class="s">"false"</span><span class="nt">&gt;</span>Settings<span class="nt">&lt;/a&gt;</span>
  <span class="nt">&lt;/li&gt;</span>
<span class="nt">&lt;/ul&gt;</span>

<span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-content"</span><span class="nt">&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane active"</span> <span class="na">id=</span><span class="s">"home"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"home-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane"</span> <span class="na">id=</span><span class="s">"profile"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"profile-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane"</span> <span class="na">id=</span><span class="s">"messages"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"messages-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
  <span class="nt">&lt;div</span> <span class="na">class=</span><span class="s">"tab-pane"</span> <span class="na">id=</span><span class="s">"settings"</span> <span class="na">role=</span><span class="s">"tabpanel"</span> <span class="na">aria-labelledby=</span><span class="s">"settings-tab"</span><span class="nt">&gt;</span>...<span class="nt">&lt;/div&gt;</span>
<span class="nt">&lt;/div&gt;</span>

<span class="nt">&lt;script&gt;</span>
  <span class="nx">$</span><span class="p">(</span><span class="kd">function</span> <span class="p">()</span> <span class="p">{</span>
    <span class="nx">$</span><span class="p">(</span><span class="s1">'#myTab li:last-child a'</span><span class="p">).</span><span class="nx">tab</span><span class="p">(</span><span class="s1">'show'</span><span class="p">)</span>
  <span class="p">})</span>
<span class="nt">&lt;/script&gt;</span></code></pre></figure>

<h4 id="tabshow">.tab(‘show’)</h4>

<p>选择给定的分页标签并显示其关联的分页内容。 之前选择的任何其他分页标签将被取消，并且其关联的内容被隐藏。 <strong>在 Tab 内容实际显示之前返回到调用者</strong> (即在 <code class="highlighter-rouge">shown.bs.tab</code> 事件发生之前）。</p>

<figure class="highlight"><pre><code class="language-js" data-lang="js"><span class="nx">$</span><span class="p">(</span><span class="s1">'#someTab'</span><span class="p">).</span><span class="nx">tab</span><span class="p">(</span><span class="s1">'show'</span><span class="p">)</span></code></pre></figure>

<h4 id="tabdispose">.tab(‘dispose’)</h4>

<p>销毁一个元素的分页标签。</p>
<h3 id="events">事件</h3>

<ol>
  <li><code class="highlighter-rouge">hide.bs.tab</code> (当前活动的分页标签上)</li>
  <li><code class="highlighter-rouge">show.bs.tab</code> (待显示的分页标签上)</li>
  <li><code class="highlighter-rouge">hidden.bs.tab</code> (在上一个启动的分页标签上，于 <code class="highlighter-rouge">hide.bs.tab</code> 事件相同)</li>
  <li><code class="highlighter-rouge">shown.bs.tab</code> (在刚刚显示的新分页标签上，于 <code class="highlighter-rouge">show.bs.tab</code> 事件相同)</li>
</ol>

<p>如果没有分页标签已经被启动，那麽 <code class="highlighter-rouge">hide.bs.tab</code>和  <code class="highlighter-rouge">hidden.bs.tab</code> 事件不会被触发。</p>

<table class="table table-bordered table-striped">
  <thead>
    <tr>
      <th style="width: 150px;">事件类型</th>
      <th>描述</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>show.bs.tab</td>
      <td>
      这个事件在分页内容显示上触发，但在分页标签显示之前。 使用 <code>event.target</code> 和 <code>event.relatedTarget</code> 来分别定位启用的分页标签和上一个分页标签（如果可用）。</td>
    </tr>
    <tr>
      <td>shown.bs.tab</td>
        <td>这个事件在一个分页标签显示之后在分页标签显示上触发。 使用 <code>event.target</code> 和 <code>event.relatedTarget</code> 来分别定位启用分页标签和上一个启用分页标签（如果可用）。</td>
    </tr>
    <tr>
      <td>hide.bs.tab</td>
      <td>c来分别定位启用分页标签和上一个启用分页标签（如果可用）。 <code>event.target</code> 和 <code>event.relatedTarget</code> 来分别定位当前启用分页标签和新的即将启用的分页标签（如果有）。</td>
    </tr>
    <tr>
      <td>hidden.bs.tab</td>
      <td>在显示新分页标签之后触发此事件（因此以前的活动分页标签被隐藏）。 使用 <code>event.target</code> 和 <code>event.relatedTarget</code> 来分别定位前一个起用分页标签和新的启用分页标签。</td>
    </tr>
  </tbody>
</table>

<figure class="highlight"><pre><code class="language-js" data-lang="js"><span class="nx">$</span><span class="p">(</span><span class="s1">'a[data-toggle="tab"]'</span><span class="p">).</span><span class="nx">on</span><span class="p">(</span><span class="s1">'shown.bs.tab'</span><span class="p">,</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">e</span><span class="p">)</span> <span class="p">{</span>
  <span class="nx">e</span><span class="p">.</span><span class="nx">target</span> <span class="c1">// newly activated tab</span>
  <span class="nx">e</span><span class="p">.</span><span class="nx">relatedTarget</span> <span class="c1">// previous active tab</span>
<span class="p">})</span></code></pre></figure>
</div>